Summary Macbeth

A detailed act-by-act summary of Macbeth by Shakespeare for Leaving Cert English, with exam-focused commentary throughout.

Act One: The Prophecy and the Murder

The play opens on a battlefield. Scotland is at war, and Macbeth has distinguished himself as a fearless warrior. He is Thane of Glamis, loyal to King Duncan, and respected by everyone. Within the first few scenes, Shakespeare establishes Macbeth as a man who has earned his reputation through courage and service.

Then the witches appear. On a heath, Macbeth and his friend Banquo encounter three figures who deliver a series of prophecies. Macbeth will become Thane of Cawdor, then King of Scotland. Banquo will father a line of kings but will not be king himself. Almost immediately, the first prophecy comes true: Duncan rewards Macbeth with the title Thane of Cawdor. The speed of it shocks Macbeth and plants the seed of ambition.

Macbeth writes to Lady Macbeth about the prophecy. Her reaction is immediate and decisive. She fears Macbeth is too honourable to seize the crown by force, so she prepares to push him. When Duncan arrives at their castle as a guest, Lady Macbeth sees the opportunity and takes charge of the plan to murder him.

Macbeth hesitates. He delivers one of the play’s most important soliloquies, weighing the reasons not to kill Duncan: he is Macbeth’s king, his kinsman, his guest. There is no justification beyond ambition itself. Lady Macbeth questions his manhood, and that is enough. Macbeth agrees to the murder.

He kills Duncan in his sleep. The act is done offstage, but the aftermath is vivid. Macbeth returns with the daggers, horrified at what he has done. He hears a voice crying that he will sleep no more. Lady Macbeth takes the daggers back and smears the sleeping guards with blood to frame them. Duncan’s body is discovered the next morning, and his sons Malcolm and Donalbain flee, making them look guilty.

For the exam, Act One is where you see the full machinery of the tragedy assembled: the supernatural temptation, the ambitious wife, and the moral weakness that allows a good man to commit an evil act.

Act Two: The Immediate Aftermath

The night of the murder is filled with unnatural signs. An owl kills a hawk. Horses eat each other. The natural world is reflecting the moral chaos that Macbeth has unleashed. Shakespeare uses these details to reinforce the idea that killing a king is not just a political act. It is a violation of natural order.

Macbeth is crowned King of Scotland. But the crown brings no peace. He is already anxious, already paranoid. The witches prophesied that Banquo’s descendants would be kings, not Macbeth’s. This means Macbeth has committed murder for a throne that will pass to someone else’s children. The thought consumes him.

Act Three: Banquo’s Murder and the Banquet

Macbeth hires murderers to kill Banquo and his son Fleance. Banquo is killed, but Fleance escapes. This failure haunts Macbeth because it means the witches’ prophecy about Banquo’s line remains intact.

The banquet scene is one of the most dramatic in the play. Macbeth hosts a feast for the Scottish lords, and Banquo’s ghost appears at the table. Only Macbeth can see it. He breaks down in front of his guests, shouting at an empty chair. Lady Macbeth tries to cover for him, telling the lords he has a condition, but the damage is done. The lords leave suspicious, and Macbeth’s grip on power begins to slip.

This scene is essential for exam answers about guilt, the supernatural, or Macbeth’s psychological deterioration. The ghost may be real or it may be a hallucination. Either way, it shows that Macbeth cannot escape the consequences of what he has done. Murder has not brought him security. It has brought him terror.

Act Four: The Second Prophecy and Macduff’s Family

Macbeth visits the witches again, seeking reassurance. They give him three new prophecies: beware Macduff, no man born of woman can harm Macbeth, and Macbeth will not be defeated until Birnam Wood moves to Dunsinane Hill. The first warning makes him afraid. The second and third make him arrogant. He takes them literally and believes he is invincible.

When he learns that Macduff has fled to England to join Malcolm, Macbeth orders the murder of Macduff’s wife and children. This is the moment where Macbeth crosses a line that cannot be uncrossed. Killing Duncan was murder driven by ambition. Killing Macduff’s family is murder driven by spite. There is no strategic purpose. It is pure cruelty.

In England, Malcolm tests Macduff’s loyalty by pretending to be worse than Macbeth. When Malcolm reveals the test, they agree to invade Scotland. Then news arrives of Macduff’s family. Macduff’s grief is raw and devastating. Malcolm tells him to turn his grief into anger. Macduff does.

Act Five: The Unravelling

Lady Macbeth has broken. She sleepwalks through the castle, rubbing her hands and muttering about blood that will not wash off. The woman who once told Macbeth to wash the blood from his hands is now unable to wash it from her own. Her guilt has destroyed her mind, and she dies offstage, almost certainly by suicide.

Macbeth receives news of her death and delivers the play’s most famous speech:

“Tomorrow, and tomorrow, and tomorrow, creeps in this petty pace from day to day, to the last syllable of recorded time.”

This is not just despair. It is the recognition that everything Macbeth fought for was meaningless. Life is a tale told by an idiot, full of sound and fury, signifying nothing. He has gained a crown and lost everything that made life worth living.

The prophecies unravel. Malcolm’s soldiers cut branches from Birnam Wood to use as camouflage, so the wood literally moves towards Dunsinane. Macduff reveals that he was born by Caesarean section, not “of woman” in the natural sense. Macbeth realises he has been tricked by the witches’ equivocal language, but he fights to the end. Macduff kills him and presents his head to Malcolm, who is crowned the rightful King of Scotland.

Why This Summary Matters for the Exam

Macbeth appears on both the Single Text and the Comparative Study. For Single Text, you need to write about character, theme, and dramatic technique with specific textual evidence. For the Comparative Study, the play offers strong material for all three modes.

The key scenes to know in detail are: the witches’ prophecy (fate versus free will), Lady Macbeth’s persuasion (the role of influence), Duncan’s murder (the act and its immediate aftermath), the banquet scene (guilt and psychological collapse), the murder of Macduff’s family (the point of no return), Lady Macbeth’s sleepwalking (the cost of ambition), and the final battle (the restoration of order).

The general vision is dark but ultimately restorative. Scotland suffers under Macbeth’s tyranny, but legitimate rule is restored when Malcolm takes the throne. The play suggests that evil is powerful but self-destructive, and that moral order, though badly damaged, can be rebuilt.